Aktuelle Forschungsprojekte

Image Solar Cooling
Image Micro heat exchangers in refrigeration
Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
Image High temperature heat pump
Image Corrosion inhibitor for ammonia absorption systems
Image Range of services laboratory analyses
Image Development of a Cryogenic Magnetic Air Separation Unit
Image Combined building and system simulation
Image Measurements on ceiling mounted cooling systems
Image Characterisation of Superconductors in Hydrogen Atmosphere
Image Ice Slurry Generation
Image Innovative small helium liquefier
Image Micro fluidic expansion valve
Image Measurement of insulated packaging
Image Testzentrum PLWP at ILK Dresden
Image Investigation of coolants

You are here:   /  Home


Brine (water)-water heat pump

6043,6044,6045,6046

The ILK Dresden has an accredited testing laboratory and offers independent tests for the following certification bodies, organisations or quality labels:

  • EHPA Quality Label Heat Pump
  • Keymark certification
  • Tests according to ErP
  • Verification test of efficiency for state subsidies
    (e.g. BAFA, MCS, Harp)

Various types of brine to water heat pumps are tested in the ILK test laboratory - PLWP. Tests are carried out on

  • fix speed heat pumps
  • variable speed heat pumps
  • heat pumps with special design (direct condensing, with thermal storage, etc.)

The brine (water) water heat pumps are tested on a semi-automatic test rig.

The Prüflabor Wärmepumpen is accredited to DIN EN ISO / IEC 17025 for the following performance and sound measurements

  • DIN EN 14511, DIN EN 14825 and DIN EN 16147
  • DIN EN 12102 and DIN EN 9614

Research and Development

We support the industry in its efforts to develop energy-efficient refrigeration systems and heat pumps.

The ILK Dresden has been active in the development and testing of refrigeration and heat pump technology for many years. The development work is carried out individually and in close cooperation with the client. The experiences of the ILK Dresden were and are continuously collected in a multiplicity of research projects.

In recent years, for example, the development of a high-temperature heat pump with operation temperatures above 120 °C has been an important research project.

Within the limits of our flexible accreditation, further measurement tasks can be carried out in accordance with applicable testing standards. Outside accreditation, further services can be offered:

  • Performance testing of WP with storage tanks
  • dynamic power measurements by means of temperature and power profile
  • Investigations of the cooling circuit of the heat pump
  • Expert opinions and evaluations of individual components
  • Characterisation of the operating behaviour of the heat pump
  • Refrigerant and material testing
  • Modifications of the systems by qualified refrigeration technicians on site in consultation with the customer

Short description of test procedure

The measurements of the heat pumps are carried out in accordance with current valid guidelines (ErP) and standards DIN EN 14511 or DIN EN 14825. If required, minor deviations are possible due to our flexible accreditation (see below Annexes to accreditation, p. 3)

The testing of the heating capacity is normally based on the water-enthalpy method. For this, the water mass flow and the temperatures are measured directly at the inlet and outlet of the heat pump. The test points are based on the current guidelines and test standards of certification bodies, quality labels (EHPA guidelines) and current standards.

Heat pumps with fixed-speed compressors and power-controlled heat pumps can be tested. Outside the accreditation of the Prüflabor Wärmepumpen, dynamic tests under changing conditions depending on the heat load are also possible. For this purpose, appropriate temperature and heat load profiles can be specified.

The brine (water) water heat pumps are tested on a semi-automatic test bench. The performance data of the test bench are given in the following tables.

Leistungsdaten Prüfstand

Heat source brine / water

Measured variable Unit min. range of application max. range of application
Volume flow/td> m³/h 1 25
Brine temperature at inlet     °C -15 40
max. pressure loss bar - 4

Heat sink water

Measured variable Unit min. range of application max. range of application
Heating capacity kW 4 100
volume flow m³/h 1 20
Water temperature at inlet °C +3 +70
max. pressure loss bar - 4

Electrical power measurement

Measured variable Unit min. range of application max. range of application
Power consumption kW 0,5 30
Frequency Hz Netzfrequenz (50) Netzfrequenz (50)
Voltage V 1~/230 3~/400
Current A 2 40

Your Request